cwoav8r
Jetboaters Captain
- Messages
- 502
- Reaction score
- 377
- Points
- 212
- Location
- Naples, Florida
- Boat Make
- Yamaha
- Year
- 2008
- Boat Model
- AR
- Boat Length
- 23
A few weeks ago I had the boat launched and when we arrived at the marina, the dock hands told me they could not get the starboard engine to crank. Port started fine for me, but when I tried the starboard... nothing.
When I engaged the starter it did not turn over. I could hear the starter try to turn and the entire engine torqued counter clockwise until I released the switch and it returned back to normal... I double checked the clean out area and there were no obstructions that I could see or feel as far as I could reach. I did not stick around for them to pull the boat to check for debris in the impeller/pump housing.
As posted in another thread... our last trip on the water, when I started the starboard engine, I heard the "box of rocks" sound, but it was cyclic... about once every second or so. When I throttled up in no wake mode it stopped.
Initial thoughts were locked up intermediate or cone bearings, debris in the impeller, or worst case water in the cylinders from an improper flush job.
Got the boat put on a work rack today... pulled all the plugs, engaged the starter, and it turned over about 3 or 4 revolutions and locked up again.
Next step was to pull the pump housing (surprised how easy it came off after five good blows with a rubber mallet) and it was immediately evident what was locked up... the impeller housing sleeve had corrosion behind it and it swelled up binding the impeller. The area of the corrosion is directly adjacent to the cooling water port. I am sure that the port side is on the verge of going as well so I will definitely repair both sides.
On the boat, peering through the hole for the shaft I can barely see the intermediate bearing... I can't make out any corrosion or rust stains, looks shiny and I can see part of the blue seal. I'm going to go with the belief that they are okay. I am hoping the sound I have been hearing was he impeller rubbing on the housing.
There are two areas of the impeller shaft that have some minor scoring... not sure if it is enough to warrant replacement though.
So, my questions are:
Best place to buy replacement aftermarket impeller housings with the replaceable plastic sleeve?
Best replacement impellers and where to buy? (they are a little nicked up, might as well huh?)
Replace the shaft?
Thanks in advance guys...
Ed
When I engaged the starter it did not turn over. I could hear the starter try to turn and the entire engine torqued counter clockwise until I released the switch and it returned back to normal... I double checked the clean out area and there were no obstructions that I could see or feel as far as I could reach. I did not stick around for them to pull the boat to check for debris in the impeller/pump housing.
As posted in another thread... our last trip on the water, when I started the starboard engine, I heard the "box of rocks" sound, but it was cyclic... about once every second or so. When I throttled up in no wake mode it stopped.
Initial thoughts were locked up intermediate or cone bearings, debris in the impeller, or worst case water in the cylinders from an improper flush job.
Got the boat put on a work rack today... pulled all the plugs, engaged the starter, and it turned over about 3 or 4 revolutions and locked up again.
Next step was to pull the pump housing (surprised how easy it came off after five good blows with a rubber mallet) and it was immediately evident what was locked up... the impeller housing sleeve had corrosion behind it and it swelled up binding the impeller. The area of the corrosion is directly adjacent to the cooling water port. I am sure that the port side is on the verge of going as well so I will definitely repair both sides.
On the boat, peering through the hole for the shaft I can barely see the intermediate bearing... I can't make out any corrosion or rust stains, looks shiny and I can see part of the blue seal. I'm going to go with the belief that they are okay. I am hoping the sound I have been hearing was he impeller rubbing on the housing.
There are two areas of the impeller shaft that have some minor scoring... not sure if it is enough to warrant replacement though.
So, my questions are:
Best place to buy replacement aftermarket impeller housings with the replaceable plastic sleeve?
Best replacement impellers and where to buy? (they are a little nicked up, might as well huh?)
Replace the shaft?
Thanks in advance guys...
Ed
